Roll-grinding machine



May 15, 1928. 1,669,504 AAAAAAA ER s sinensis-:shewv 2 May 15, 1928.

A. A. BAKER ROLL GRINDING MACHINE Filed Aug. 2a. 1924 5 sheets-smet 3 l 3mm,

Patented May l5, 1928.

UNITEDl STATESA PATENT oFfFIcEQ* ALBERT A. BAKER, F ANSONI, CONNECTICUT, ASSIGNOR, BY HESNE ASSIGNMENTS, T0 FABBEL-BIRMINGHAM COMPANY, INCORPORATED, OF ANSONIA, CONNECTICUT,

.A CORPORATION OF CONNECTICUT.

noLL-GnxNDI'Ne MACHINE.

This invention relates to roll grinding machines, and more particularly to that class of grinding machines employed for grinding rolls suchl asare used, for instance, in connection with rolling mills, calendering ma-e chines, and other relatively heavy Work, and particularly for rolls designed to. be used upon heated material, such as hot steel plates, in which case lthe roll becomes heat; l ed and expands and for this reason it is necessary to crown or concave the roll, so that the plates vwill not emerge from the rolls thinner at the central portion thereof than at the edges. In preparing rolls of this character, the operation becomes 'a real grinding operatlon, as a considerable amount of material must be removed from the roll, as distinguished from a polishing or finishing operation some times performed when straight rolls are redressed.

Machines of this character usually employ a carriage which travels to and fro over the bed of the machine upon slides or ways; and where a considerable amount of material is removed from the roll, the grit and ilings find their way to these slides or ways, and as a result the ways soon become so badly worn that it is necessary to refinish them.

In prior machines of this character the ways upon the bed had usually been V-shape in form, the vertex of the V being disposed lowermost, so that the way in effect constitutes a trough, and any dirt, grit or lings falling upon these ways are carried to the bottom of this trough by the lubricant discharged thereupon, so that an accumulation of this extraneous material occurs withn the trough of the way and serves to shorten the useful period thereof on account of* the increased wearing eiect.

One object of my invention, therefore',l is

to provide an improved roll grinding machine of this character, wherein the wa s upon which the carriage moves will cleansed of the grit and impurities likely to cause wear, and from which the grit and im-l purities will be shed so as not to deleteriously aiect the surface of the Way.

Another object of this invention is to provide a roll grinding machine with ways of such character that the wearing surfaces thereof will slope downwardly so that there will be a natural gravitational tendency for the grit land impurities to be removed from the way.

A still further object ofV the invention. is to provide an improved lubricating system for Ways of this character, such that the lubricant will be discharged upon the ways at the highest point thereof, so that the entire surface will be washed and cleansed of rit and impurities by the lubricant-supp ied thereto'.

A still further object of the invention is to provide an improved lubricatin system for the carriage ways of a roll grinder, so that the lubricant which has cleansed the ways of foreign material will discharge this material during its return to the tank and pump from whch itis again supplied to the ways. The material carried in suspension by the lubricant will, according to my invention, be entirely removed from the'ways and deposited in open channels which may readily be cleansed, and which are so located that this material will not prevent the free' return ofthe lubricant toi-wthe pump.

ing machine embodying my improvements;

Fig. V2 is an end elevational view of the same;

Fig.A 3 is an end elevationalview of the machine bed and carriage showing the inverted V-shaped Ways;

Fig. 4 is a transverse sectional view of the 'ways on line 4--4 of Fig. 5;

Fig. 5 is a bottom plan view of one ofthe ways.

The articular embodiment of my invention wlliich I have selected to illustrate in the accompanying drawings comprises a bed which may be of any proper orsuitable configuration o r shape to properly support the` various machinery designed to be carof one ried thereon. The mechanism supported upon this bed may generally conslst, as shown in Fig. 1, of a headstock A, a tailstock B, a reciprocating carriage C having -mounted thereon carriage operating and regrinding wheel shown more especially in Fig. 3, upon which the main carriage C is adapted to rest. Above these Ways may be arranged suitable guards 22 and 23, so as to prevent, as far as possible, grit or other foreign material resulting' from the grinding operation from falling upon the ways. The upper bearing surfaces of the ways, as shown in Figs.A 3 and 4, are so arranged that the sides slope downwardly from an intermediate crest or ridge so that any dirt orgrit falling thereon will have Aa tendency to work down the sloping sides of the ways and fall therefrom into the channels 25, 26, 27 and 28 which extend lengthwise of the bed throughout the length of the ways. As shown in Fi 4, the upper surfaces of these ways are ormed in the shape of an inverted V in cross-section, the slopin sides 29 and 30 being inclined to- K ward t e intermediate crest or vertex 31. e

Upon the lower side of the carriage C are provided bearing surfaces 32 and 33, complementally shaped relatively to the ways 20 and 21, so that an inverted trough is rovided in the carriage, the sides of which ar evenly upon the sloping sides 29 and 30 of the ways 20 and 21. The carriage C is also provided with openings 34 and 35 through i .which the guards 22 and 23 extend, the

guards being suitably sup orted by their ends beyond the range of t e movement of the carriage. L

As shown more particularly in Fig. 4, the ways 20 and 21 are each provided with side flanges 40 and 41 by which they maybe bolted to the bed 10. Atthe lower part of the way. the latter is cored out to provide a lubricant channel l42, through which, as will be hereinafter described, lubricating material is forced through the way by a suitable pump. Longitudinally of this channel a strengthening web 43 extends len hwise of the way, land at intervals lateral y extendlin web's 44' and 45 join the web 43 to the si es of the oil channel 42.

- Channels or @bores 46 extend upwardl at to the ridge of 'the way, at which. point the latter is sllghtly concave to rovide a chan nel 47, so as to permit the oil to rise within the bore 46 and flow from the channel 47 the oil or lubricant being distributed through this channel through the ducts 4.6 flows evenly therefrom over the Aentire bearing surface of the ways. The oil falling from the sides of the ways flows slowly or sluggishly through the return channels 25, 26, 27 and 28, so that its burden of foreign material held in suspension will be deposited therein, the oil falling through the openings 49 and 50, shown at the ends of the ways in Eig. 1, to a reservoir or tank 51 within the As shown more particularly in Fig. 3, the oil is drawn from this reservoir through a strainer 52 and pipe 53 by the pump 54 to which the ypipe leads, and is delivered by the delivery pipe 55 to the branch pipes 56 and 57 connected to the ducts 58 leading through the edges of the ways to the oil channel 42. The pum is operated by a belt 59 leadingi from a pu ley 60 upon the shaft of a sproc et 61 driven by the sprocket chain 15 from the motor 14.

Itl will be observed that'the oil channel 42 is closed at the end opposite the duct 58 so that a pressure may be built up therein and cause the lubricant to rise in the ducts or bores 46 and emerge upon the ridge of the wa so as to flow. downwardly over the entire earino surface thereof4 and cleanse this surface thoroughl of all grit, dirt or other impurities whic are washed" downwardly due to the sloping character of the bearing surf ce into the return channels. The grit sett ing in these channels may be /quite readily removed from time to time so v as not to interfere too much w' K ing capacity/ thereof or the luy ricant.

It will be understood that as shown and vmore fully described in the applicationof Henry E. P. Taylor, Serial No. 707,633, tiled April 19, 1924,. the carriage C upon which Othe 'carriage drivin and reversing mechanism4 D and the grinding wheel operating mechanism -E are mounted is caused to recip- A rocate back and forth over the bed 10 so that the grinding wheel traverses the length of the roll sup orted between the heads'tock A and tail'stoc lB. For this urpose upon the carriage is provided the riving motor 63 the carryand reversing mechanism 64 which it is not necessary to describe in detail in this application. The inding wheel operati mech- `anism E inc udes a suitable crowning" deintervals from thelubricating channe 424 vice, also described in the co-pending appli 13 cation referred-to above, by which the rolls may be suitably crowned or concaved to the extent desired.

It will be obvious, also, that notwithstand.. ing the relatively Ilarge amount of metal whichy must be' ground oli' the rolls in a de# vice of this character, the grit and dirt and impurities resulting therefrom will beconstantly washed off t-lie ways, due to the sloping form thereof and to the cleansing or washing action -of the lubricant which isforced to the highest pointupon the way and permitted to iiow downwardly ovei' the entire .hearing surface thereof.

lVhile I have shown and described a preferred embodiment .of my invention, it will be understood that it is not to 'be limited to all the details shown, but is capable of moditication and variation within the spirit of the invention and within the` scbpe of the appended claims.

l. In a roll grinding machine, a bed, a carriage adapted to reciprocate upon saidv bed and having grinding mechanism mounted thereon, a way upon the bed upon which said carriage is adapted to slide, said way being formed with a central ridge and bearing surfaces sloping downwardly and outwardly from said ridge, and means for continuously supplying a lubricant along the ridge, the lubricant being supplied in sufficient quantity to wash the sloping sides of the way and remove any foreign material adhering thereto.

2. In a roll grinding machine, a bed, a carriage adapted to reciprocate upon said bed and having grinding mechanism mounted thereon, a way upon the bed upon which said carriage is adapted to slide, lsaid 'way being of inverted V-shape form, and means for forcing a lubricant underA pressure through the apex ofthe way, the lubricant being supplied in sufficient quantity to wash the sloping sides of the way and remove any foreign material adhering thereto.

3. In a roll grinding machine, a bed, a carriage adapted to reciprocate upon said bed ,and having grinding mechanism mounted thereon, a way upon the bed upon which said carriage is adapted to slide, said way being formed with a central ridge and bearing surfaces sloping`downwardly and outwardly.

from said ridge, said way being provided with a ridge channel, and means for continuously supplying a lubricant to said channel, the lubricant` being supplied in sufficient quantity to flow over the bearing surfaces of the way and cleanse them of foreign material falling thereon.

4. In a roll.y grinding machine, a bed, a

carriage adapted to reciprocate uponsaid bed and having grindingmechanism mounted thereon, a way upon the bed upon which said carriage is adapted to slide, said. way

being formed with a central ridge and bearing surfaces sloping downwardly and outwardlythcrefrom, said way being formed with aridge channel extending substantial,

ly throughout the lengthof said way, and means arranged interioi'ly of said way for supplying a lubricant to said channel, thek lubricant being supplied in suiiicient quantity to flow over the bearing surfaces of the way and cleanse them of foreign material falling thereon.

5. A roll grinding machine comprising a bed, a carriage slidably mounted on the bed, roll grinding 'and crowning mechanism mounted on the carriage, a way upon which said carriage. is adapted to slide, said way.

the drip of lubricant therefrom, and a lubricant reservoir into which said channels empty.

7'. A roll grindinr machine comprising a. `bed, a carriage slida ly mounted on the bed, roll grinding and j crowning mechanism mounted ontie carriage, a way upon which said carriage is adapted to slide, saidI way surfaces sloping downwardly from' this ridge, means for continuously supplying a lubricant'to the sloping surfaces o the way, channels extending along said wayto catch ou the carriage, a way upon which 4channels extending along said Way to catch im y the drip of lubricant therefrom, a reservoir I arranged within the bed below the ways, and openings in the bed through which the oil received in said channels flows into said reservoir.

`9. In a roll grinding machine, a bed, a carriage mounted to slide upon vsaid bed, a way upon which said carriage is adapted to slide, said way beingprovided with down`. wardly and outwardly sloping bearing sur-I faces, a. channel uponsaid way between said surfaces whereby a lubricant supplied tothe way upon which said carriage is adapted to slide, said way being provided with downwardly and outwardly sloping bearing surfaces, a channel upon said way between said surfaces whereby'a lubricant supplied to the channel flows over said bearingsurfaces to cleanse them of foreign material, return channels provided in the bed along the edges of the way to catch the wash therefrom, a reservoir provided in thebed, said bed bei'ng provided with openings through which the oil received in said channelsfflows into lthe reservoir, said way being providedwith interior ducts communicating with said channel therein, and means to force a lubricant from said reservoir through said ducts into the channel.

11. A roll grinding machine havingl a bed, a carriage mounted to reciprocate on said bed, roll grinding and crowning mechanism on said carriage, ways upon which the carriage is adapted to slide, each of said ways ybeing provided with an interiorly formed oil channel extending therethrough, said way having a longitudinally extending ridge and a. second oil channel formed thereon, ducts establishing communication between said channels, an oil reservoir, and means for supplying oil to said interiorly formed'channel and forcingitthrough said ducts to the ridge channeh 12. A roll grinding machine having a bed, a carriage slidably mounted upon the bed, a.

wa upon which saidcarriageV is adapted tol sli e. said way having an int-eriorly formed oil channel therein'and a longitudinally extending supporting web provided inV said channel, means for supplying oil to the channel, and means for conducting said oil from the channel to the bearing surfaces of the way.

13. A roll grinding machine havinga. bed, a carriage slidably mounted upon V the bed, a. way upon which said carriage is adapted to slide, said way having an interiorly formed oil channeltherein and a longitudinally extending supporting web provided 1n said channel, means for supplying oil to the channel, means fortconducting said oil from the vchannel to the bearing surf-aces of the Way,

and an open channel for catching the wash i from said bearing surfaces in Which the-foreign material washed'from the way is adapted to settle. j

14. A roll grinding machine having a bed, a carriage slidably mounted upon the bed, a way upon which said carriage is adapted lto slide, said way having an interiorly formed oil channel therein and a longitudinally ex# ,tending supporting web provided insaid channel, means for supplying oil to the channel, andmeans for conducting said oil from the channel to the bearing surfaces of the way and from which the oil is returned directly to said supplying means.

15. A roll grinding machine having a bed, a carriage slidably mounted upon the bed, a way upon which said carriage is adapted to slide, said way having an interiorly formed oil channel thereinand longitudinally and laterally yextending supporting webs provided in said channel, means for supplying oil to the channel, and means for conducting said oil from the channel to the bearing surfaces of the way. v

1'6. vIn a roll.E grinding machine orthe like, a bed, acarriage adapted to reciprocate upon said bed, a way upon the bed upon which saidy carriage is adapted to slide, said way` being formed with 'a' ridge anda bearing surface sloping downwardly and outwardly fromsfsaid ridge, andmeans for continuously y supplying a lubricant along the ridge, the' lubricant being supplied in sufficient quantityto wash the sloping Vside of the Way and to remove any foreign` vmaterial adhering thereto.

In witness whereof, I have hereunto set 'my hand 4this eighteenth day of August,

ALBERT A. BAKER. 

